6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
50.8%
When processing a redirect with a conflicting Referrer-Policy, Firefox
would have adopted the redirect’s Referrer-Policy. This would have
potentially resulted in more information than intended by the original
origin being provided to the destination of the redirect. This
vulnerability affects Firefox < 86.
Author | Note |
---|---|
tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | firefox | < 86.0+build3-0ubuntu0.18.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | firefox | < 86.0+build3-0ubuntu0.20.04.1 | UNKNOWN |
ubuntu | 20.10 | noarch | firefox | < 86.0+build3-0ubuntu0.20.10.1 | UNKNOWN |
ubuntu | 21.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 21.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 22.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 22.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 23.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 23.10 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
ubuntu | 24.04 | noarch | firefox | < 86.0+build3-0ubuntu1 | UNKNOWN |
bugzilla.mozilla.org/show_bug.cgi?id=1678545
launchpad.net/bugs/cve/CVE-2021-23971
nvd.nist.gov/vuln/detail/CVE-2021-23971
security-tracker.debian.org/tracker/CVE-2021-23971
ubuntu.com/security/notices/USN-4756-1
www.cve.org/CVERecord?id=CVE-2021-23971
www.mozilla.org/en-US/security/advisories/mfsa2021-07/#CVE-2021-23971
www.mozilla.org/security/advisories/mfsa2021-07/
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
50.8%